LONDON (AFP) - Angry students attacked a police van and clashed with officers Wednesday as thousands of people marched through London in protest at government plans to triple university fees. An estimated 10,000 people took part in the second mass protest in London this month against the measures, but demonstrations also took place across Britain on Wednesday. In the capital, an angry mob besieged a police van parked on the march route and tried to overturn it, smashing the front windscreen, pulling off the wing mirrors and jumping on the roof. Other students daubed the white walls of the Foreign Office headquarters with graffiti reading Revolution and Smash The Cuts, while a handful jumped over barriers to enter the nearby complex containing the Ministry of Defence. Were here to show the government how angry we are when we rise up, one student told AFP after climbing on a windowsill of the Foreign Office building and trying to break in. I want to go to university, I want to do something good with my life but thsee cuts will make it almost impossible, said 15-year-old Bethany Hawker, who admitted to skipping school to attend the London protest with two friends. Still wearing her black school uniform with a blue striped tie, she said: My mum is on benefits and struggles to make do as it is. Some estimates put the crowd in London at 10,000. But unlike the violent protests two weeks ago when Scotland Yard admitted to being caught off guard, hundreds of police were on duty Wednesday to contain the crowds and at one point beat back demonstrators with batons. At least eight people were arrested and two police officers were injured, one with a broken arm and the other was knocked unconscious, police said. Six members of the public also reportedly suffered minor injuries. Students are furious at plans by Prime Minister David Camerons coalition government to sharply raise university fees as part of a programme of deep public spending cuts intended to pay off a record deficit. These cuts are ridiculous. Well do whatever it takes to stop them. More cuts will obviously mean more social inequality, said Anthony Moore-Baspos, 23, a student at Kings College London. Up to 50,000 young people protested against the cuts on November 10, which degenerated into riots as dozens of students ransacked the lobby of the offices of Camerons Conservative party. Wednesdays march in London was one of a series of nationwide events, including 3,000-strong marches in Manchester and Brighton and a 1,000-strong protest in Cambridge. About 300 schoolchildren walked out of their classrooms in Derbyshire, northern England, and another 60 at a school in nearby Nottingham. In the capital, the protest began peacefully and some demonstrators remonstrated with those who were smashing up the police van to calm down. As the crowd progressed towards the Houses of Parliament, brandishing placards reading Tory Scum Here We Come and Fight The Cuts, police surrounded them and forced them to stop, a controversial tactic known as kettling. Camerons spokesman condemned the violence, saying: People obviously have a right to engage in lawful and peaceful protest, but there is no place for violence or intimidation. Protesters Wednesday intended to deliver a letter to the offices of the Liberal Democrats, the junior coalition partners, to demand the fees policy be changed. The Lib Dems and their leader, Deputy Prime Minister Nick Clegg, have become a focus of anger because they explicitly promised to oppose any increase in tuition fees in campaigning ahead of Mays general election. On Tuesday, a handful of demonstrators hanged an effigy of Clegg as he gave a speech in London.